* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 100%;
    padding: 20px;
    margin: 0 auto;
}

h1 {
    text-align: center;
    color: #B300B3;
    margin-bottom: 10px;
    font-size: 24px;
}

.description {
    text-align: center;
    color: #333;
    margin-bottom: 10px;
    font-size: 16px;
}

.brand-section {
    background: white;
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    overflow: hidden;
}

.brand-header {
    padding: 15px;
    display: flex;
    align-items: center;
    cursor: pointer;
    background-color: #fff;
    border-bottom: 1px solid #eee;
}

.brand-logo {
    width: 30px;
    height: 30px;
    margin-right: 10px;
}

.brand-header h2 {
    flex: 1;
    font-size: 18px;
    color: #333;
}

.toggle-icon {
    color: #B300B3;
    font-size: 16px;
    transition: transform 0.3s ease;
}

.video-container {
    display: none;
    padding: 15px;
}

.video-container.active {
    display: block;
}

video {
    width: 100%;
    border-radius: 5px;
}

/* 展开状态的样式 */
.brand-section.active .toggle-icon {
    transform: rotate(180deg);
}

/* 响应式调整 */
@media (max-width: 480px) {
    .container {
        padding: 15px;
    }
    
    h1 {
        font-size: 20px;
    }
    
    .description {
        font-size: 14px;
    }
    
    .brand-header h2 {
        font-size: 16px;
    }
}